Single Row Radial Ball Bearings

**NTN Single Row Deep Groove Ball Bearings: Precision, Durability & Performance for Demanding Applications**

NTN’s **Single Row Deep Groove Ball Bearings** represent the pinnacle of reliability and efficiency in radial bearing technology. Designed to handle both radial and moderate axial loads, these bearings are engineered for high-speed operation, low noise, and extended service life across a wide range of industrial and automotive applications. With precision-ground raceways, high-quality steel construction, and advanced sealing options, NTN’s deep groove ball bearings deliver unmatched performance in compact, lightweight designs.

### **Technical Features & Design Advantages**
NTN’s deep groove ball bearings incorporate several key innovations to optimize performance:
– **Robust Single-Row Design**: The deep, uninterrupted raceway geometry ensures smooth load distribution, reducing stress concentrations and wear.
– **High-Grade Materials**: Manufactured from premium chromium steel (SUJ2 equivalent) or specialty alloys, these bearings resist fatigue and deformation under heavy loads.
– **Precision Grinding & Tolerances**: NTN’s stringent manufacturing standards ensure ABEC-1 to ABEC-7 tolerance classes, minimizing vibration for sensitive applications.
– **Versatile Configurations**: Available with shields (ZZ, 2Z), rubber seals (LLU, 2LU), or open designs to suit lubrication and contamination control needs.
– **Optimized Cage Designs**: Options include pressed steel, machined brass, or polymer cages (e.g., glass fiber-reinforced PA66) for high-speed stability.

### **Performance Benefits**
– **Low Friction & Energy Efficiency**: Reduced torque losses enhance efficiency in motors, pumps, and electric vehicles (EVs).
– **High-Speed Capability**: Advanced lubrication and dynamic balancing enable stable operation at extreme RPMs (e.g., machine tool spindles).
– **Long Service Life**: NTN’s proprietary heat treatment and surface finishing technologies (like TF treatment) combat micropitting and extend bearing life.
– **Quiet Operation**: Precision engineering minimizes acoustic noise, ideal for HVAC fans and automotive alternators.

### **Typical Applications**
NTN’s deep groove ball bearings are integral to:
– **Industrial Machinery**: Electric motors, gearboxes, conveyors, and CNC equipment.
– **Automotive Systems**: Wheel hubs, transmissions, alternators, and EV drivetrains.
– **Precision Equipment**: Medical devices, robotics, and aerospace actuators.
– **Consumer Appliances**: Compressors, power tools, and agricultural machinery.

For engineers seeking a balance of load capacity, speed, and reliability, NTN’s deep groove ball bearings offer a proven solution backed by global R&D and stringent quality control. Whether in harsh industrial environments or high-performance automotive systems, these bearings ensure smooth, maintenance-free operation under demanding conditions.

*Explore NTN’s full range of sizes, seals, and specialty coatings to match your application’s exact requirements.*

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Part Number d D B r Mass
6911ZZNRC3
55.000 mm
80.000 mm
13.000 mm
1.000 mm
6011LLUNR
55.000 mm
90.000 mm
18.000 mm
1.100 mm
0.404 kg
6011LLUNRC3
55.000 mm
90.000 mm
18.000 mm
1.100 mm
6211LLUNR
55.000 mm
100.000 mm
21.000 mm
1.500 mm
0.625 kg
6211LLUNRC3
55.000 mm
100.000 mm
21.000 mm
1.500 mm
0.608 kg
6311LLUNR
55.000 mm
120.000 mm
29.000 mm
2.000 mm
6311LLUNRC3
55.000 mm
120.000 mm
29.000 mm
2.000 mm
6811LLUNR
55.000 mm
72.000 mm
9.000 mm
0.300 mm
6811LLUNRC3
55.000 mm
72.000 mm
9.000 mm
0.300 mm
6911LLUNR
55.000 mm
80.000 mm
13.000 mm
1.000 mm
6911LLUNRC3
55.000 mm
80.000 mm
13.000 mm
1.000 mm
6311ZZNR
55.000 mm
120.000 mm
29.000 mm
2.000 mm
1.400 kg
6011LLBNR
55.000 mm
90.000 mm
18.000 mm
1.100 mm
0.388 kg
6311ZZNRC3
55.000 mm
120.000 mm
29.000 mm
2.000 mm
1.400 kg
6211LLBNR
55.000 mm
100.000 mm
21.000 mm
1.500 mm
0.625 kg
6911ZZNR
55.000 mm
80.000 mm
13.000 mm
1.000 mm
0.184 kg
6311LLBNR
55.000 mm
120.000 mm
29.000 mm
2.000 mm
1.400 kg
TMB211L1C3
55.000 mm
100.000 mm
21.000 mm
1.500 mm
0.728 kg
211B
55.000 mm
100.000 mm
21.000 mm
1.524 mm
6211F604
55.000 mm
100.000 mm
21.000 mm
1.500 mm
7MP-6311M2C4P6
55.000 mm
120.000 mm
29.000 mm
2.000 mm
1.238 kg
6911C3
55.000 mm
80.000 mm
13.000 mm
1.000 mm
0.183 kg
6011F700
55.000 mm
90.000 mm
18.000 mm
1.100 mm
6011X1WC3
55.000 mm
90.000 mm
18.000 mm
1.100 mm